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. 2016 Apr 28;6:25188. doi: 10.1038/srep25188

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(a) Visual acuity (VA) before and after training per subject. The dotted gray line is the unity line, indicating no improvement. The solid blue line is the best fitting regression line. (b) The improvement in VA (LogMAR Pre-LogMAR Post) as a function of the initial VA. The dotted gray line indicates no improvement. The solid blue line is the best fitting regression line.